Washington County, Kansas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 62nd-largest in Kansas
The population of Washington County, Kansas is 5,519 as of the 2023 American Community Survey, making it the 62nd-largest county in Kansas. The median household income is $62,452, the median home value is $106,100, and the median age is 43.9.
The population of Washington County has declined 3.7% since 2010 (5,785 → 5,572), a -0.27% annualized rate.
5,519
Population
-0.27%
Annual growth
6
People / sq mi
$62,452
Median Income
$106,100
Median Home Value
Washington County covers 895 sq mi of land at 6.2 people per square mile.
About Washington County, KS
Washington County is a county in Kansas with a population of 5,519. It ranks #62 among counties in Kansas by population. The median age is 43.9, older than the national median. The population is 51.8% male and 48.2% female.
The median household income in Washington County is $62,452, below the US median of $74,580. 5.4% of residents live below the federal poverty level. Home values sit at a median of $106,100, with monthly rent averaging $547. The homeownership rate of 78.1% is higher than the national rate of 64.8%.
Educational attainment in Washington County reflects 23.3% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.4% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 20.5 minutes each way.
Washington County Population History (2010-2024)
The county of Washington County had a population of 5,785 in 2010 and 5,572 in 2024, a -3.7% growth over 14 years. The peak was 5,820 in 2011. Average annual growth rate: -0.26%.
5,572
Population (2024)
5,785
Population (2010)
5,820
Peak (2011)
-0.26%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 5,785 |
| 2011 | 5,820 |
| 2012 | 5,727 |
| 2013 | 5,626 |
| 2014 | 5,610 |
| 2015 | 5,568 |
| 2016 | 5,561 |
| 2017 | 5,475 |
| 2018 | 5,457 |
| 2019 | 5,449 |
| 2020 | 5,526 |
| 2021 | 5,521 |
| 2022 | 5,495 |
| 2023 | 5,553 |
| 2024 | 5,572 |
Race & Ethnicity
| White | 92.9% |
| Black or African American | 0.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Age & Sex
43.9
Median Age
48.2%
Female
51.8%
Male
23.4%
Age 65+
Age Distribution
Children (under 15): 19.5% · Seniors (65+): 23.4%
Income & Poverty
| Median household income | $62,452$-10,187 vs state |
| Mean household income | $79,440 |
| Per-capita income | $34,654 |
| Poverty rate | 5.4%-2.3% vs state |
| Unemployment rate | 0.9% |
| Employment-to-population | 58.9% |
Top Industries by Employment
The largest employment sector in Washington County is professional & business services, accounting for 24.4% of workers.
How residents commute
0.0%
Drive alone
4.2%
Carpool
79.4%
Public transit
7.4%
Work from home
20.5 min
Avg commute
Housing
$106,100$-97,300 vs state
Median home value
$547
Median rent
78.1%
Homeownership rate
2,731
Total housing units
86.8%
Occupied
13.2%
Vacant
21.9%
Renter-occupied
Social & access
94.8%
With health insurance
86.6%
With broadband internet
24.8%
Foreign-born
9.2%
Veterans (18+)
13.9%
With a disability
94.6%
Speak language other than English at home
Education
94.5%
High School+
23.3%
Bachelor's+
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County rankings
Frequently Asked Questions
Washington County, Kansas has a population of 5,519 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 62nd-largest county in Kansas. Population density is 6 people per square mile.
The population of Washington County has declined 3.7% since 2010 (5,785 → 5,572), a -0.27% annualized rate.
The median household income in Washington County, Kansas is $62,452, with mean (average) household income of $79,440 and per-capita income of $34,654. 5.4% of residents live below the federal poverty level.
In Washington County, the largest racial and ethnic groups are White (92.9%), Hispanic or Latino (0.5%), Black or African American (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Washington County, Kansas is 43.9 years. Residents are 48.2% female and 51.8% male.
The median home value in Washington County is $106,100 and median monthly rent is $547. 78.1% of occupied housing units are owner-occupied. The county has 2,731 total housing units, 13.2% of which are vacant.
The largest employment sector in Washington County, Kansas is professional, scientific, and management services, employing 24.4% of workers. The unemployment rate is 0.9%.
Wichita is among the largest cities associated with Washington County, Kansas, with a population of 396,488.
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Population, race, income, age, and trends across Kansas
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.